On Jan 2, 6:55*pm, axolotl wrote:

Dan,

I just went down and double checked. Twenty revolutions of the crank
gives one revolution of the table. Perhaps it was a compromise in
cranking speed; the table has no way to decouple the worm gear and shift
the table by hand. It is a horizontal only table similar in appearance
to the No. 86 made in the fifties. The age is unknown- it was a Cabin
Fever purchase.

Kevin Gallimore

Thanks for looking. I am not sure why they would have used 20:1
gearing.

Dan